Fabrication of Cu-BTC metal organic frameworks on PVDF hollow fiber membrane for gas separation via multiple reactions
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  • 作者:Yingbo Chen ; Biao Wang ; Shifeng Zhang ; Xiaoyu Hu ; Bowen Cheng…
  • 关键词:Cu ; BTC ; Composite membrane ; Interface crystallization ; Gas separation
  • 刊名:Fibers and Polymers
  • 出版年:2015
  • 出版时间:October 2015
  • 年:2015
  • 卷:16
  • 期:10
  • 页码:2130-2134
  • 全文大小:951 KB
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  • 作者单位:Yingbo Chen (1) (2)
    Biao Wang (1) (2)
    Shifeng Zhang (1) (2)
    Xiaoyu Hu (2)
    Bowen Cheng (2)
    Dongqing Liu (1)
    Yufeng Zhang (1) (2)

    1. School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, P. R. China
    2. State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, P. R. China
  • 刊物类别:Chemistry and Materials Science
  • 刊物主题:Chemistry
    Polymer Sciences
  • 出版者:The Korean Fiber Society
  • ISSN:1875-0052
文摘
Cu-BTC/PVDF composite membranes were prepared by immersing PVDF hollow fiber supporting membranes into copper acetate aqueous solution and trimesic acid ethanol solution repeatedly. Surface and cross sectional morphologies of Cu-BTC crystals on the supporting PVDF membrane were investigated using SEM. Chemical composition and crystal structure of Cu-BTC were characterized by IR and XRD. Gas permeance and separation factor for CO2 and N2 of the Cu- BTC/PVDF composite membrane were recorded under different pressures. The results illustrated that with increasing reaction times, the crystal layer became more in density and less in defects, resulting in decrease of gas permeance and the separation mechanism changing from convective flow to Knusen diffusion.

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